Ravens coach John Harbaugh, second from left, speaks with his brother, Michigan coach Jim Harbaugh, on the sideline during a game against Maryland in College Park in 2015.

The Harbaugh brothers face off Monday night for the first time since John's Ravens beat Jim's 49ers in Super Bowl XLVII in January 2013.

Ravens coach John Harbaugh (right) and 49ers coach Jim Harbaugh meet on the field after Super Bowl XLVII, won by Baltimore 34-31. Now both are back in the NFL.

Jim Harbaugh and John Harbaugh after the Ravens defeated the Pittsburgh Steelers 30-17 in their AFC Wild Card game at Heinz Field on January 3, 2015 in Pittsburgh, Pennsylvania. Jamie ...